How to design a simplified LUT

[ruwan2]

Hi,
I once was asked a question on how to design a look up table. It is said that the full table will need 16-bit address for some random data. In order to save resource, it was required to use 4-bit entry address. I had logic design for some time, but this question was beyond of my solution even after a long time.

Could you explain it to me?


Thanks,

 

[TrickyDicky]

You seem to have struggled to explain it to us - so helping is rather hard.

I assume with the 4 bit address lookup you've lost some resolution in the lookup values?

 

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A LUT is just a ROM. What is the problem you are having with designing it?